CN2612994Y - Optical pointer with illuminance control device - Google Patents
Optical pointer with illuminance control device Download PDFInfo
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- CN2612994Y CN2612994Y CNU032044992U CN03204499U CN2612994Y CN 2612994 Y CN2612994 Y CN 2612994Y CN U032044992 U CNU032044992 U CN U032044992U CN 03204499 U CN03204499 U CN 03204499U CN 2612994 Y CN2612994 Y CN 2612994Y
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- pointer device
- optical pointer
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Abstract
The utility model discloses an optical pointer device with a light illuminating degree controlling device, comprising a light source, an optical sensor mode used to receive the reflection light generated after the light source projects on a working surface, meanwhile getting an image and a parameter, a central processing unit which receives the optical sensor mode and receives the parameter, after calculation, a feedback controlling signal is generated, a current controller, which connects the central processing unit, receives the feedback controlling signals and changes the current to control the illuminating strength of the light source. The above structure makes the optical pointer device can effectively increase the quality of the image and improve the controlling preciseness of the computer cursor.
Description
Technical field
The utility model relates to a kind of optical pointer device of tool illuminance control device, particularly a kind of control device that changes light detecting intensity.
Background technology
Optical mouse is being subjected to suitable welcome on the market, and the trend that replaces traditional idler wheel mouse is arranged gradually.The tradition roller-ball mouse is detected the variation of coordinate position by the scroll actions of roller contact working surface, thus can cause spin directly to adsorb the dust or the greasy dirt of desktop unavoidably, even be the situation generation of wearing and tearing.Of a specified duration and of a specified duration, just influence the operation quality of mouse.Therefore the dirt that roller adheres to is removed in the necessary periodic cleaning of the user of traditional bobbin type mouse.Yet, even the spin of periodic cleaning mouse, because roller surface wearing and tearing, the sensitivity of mouse also can descend along with the time, that is to say, though the operation quality of the bobbin type mouse after taking out stains can be better than the bobbin type mouse that does not take out stains, but still can't recover the optimal operations quality, therefore must regularly eliminate and change.
Because the use amount of network increases, according to statistics, about 1-2 of the life-span of an average bobbin type mouse.And conventional optical mouse 1 does not just have the puzzlement of this respect, sees also Fig. 1, and this is the configuration diagram of conventional optical mouse 1.Conventional optical mouse 1 is utilized a light-emitting device 10, as LED, send a light, after the reflection via a working surface, receive this refract light by an optical sensor module 11, to capture an image (image), previous with it again another image of accepting is compared, and according to the otherness of these two images to produce the mobile signal of a correspondence; This signal will be admitted in the interior central processing unit 12 of optical mouse and be analyzed, and produce a relative computer cursor controlling signal to a computing machine, be presented the mobile variation of synchronous computer cursor again by a computer screen.Because the induction of traditional optical mouse 1 does not directly contact with working surface, also just do not have the situation generation that dirt is adhered to and need periodic cleaning, more do not have because the facts of wearing and tearing makes the sensitivity of mouse descend.
The work of conventional optical mouse 1 is the reflection that utilizes a light, makes with the principle that captures an image; Because the material or the change in color of every kind of working surface, so the reflectivity of this working surface (refractive index) also can be different; So under the same luminous intensity, the control of the image capture quality of conventional optical mouse 1 forms the problem that is difficult for overcoming always.For instance, for glass material,, has only the light meeting reflected back mouse of only a few, on the desktop of glass so conventional optical mouse 1 just can not be worked because light is understood transmission.And for working surface between same material tool different surfaces color because the varying in size of reflectivity, also can and face the problem that aforesaid operations is difficult for.Otherwise, if when the reflectible light of working surface institute is too many, then may produce similar can't help tremble or be absorbed in fully can't start awkward situation.
Therefore in order to keep the operation quality of optical pointer device, must do the work of " adaptation " or " correction " at any time.Press, existing modification method has two kinds, and a kind of is to adjust frame rate (frame rate), and another kind is to adjust shutter mode (shutter mode).Wherein, frame rate is defined as: the number of times of image capture in the unit interval; And shutter mode is defined as: the time span of image capture in each frame rate.Under each clock frequency (clock frequency), frame rate and shutter mode are the relation of inverse ratio mutually.Owing to relate to loaded down with trivial details calculating process around here, non-application target of the present utility model is so skip over relevant discussion.
The adaptive system of conventional optical mouse 1 is to adopt dual modes such as adjusting frame rate and adjustment shutter mode simultaneously at present, wherein shutter mode is directly controlled by the microprocessor in the optical sensor module 11 (figure does not show), and frame rate is controlled by the central processing unit in the optical mouse 12.But the needs of visual reality in the future, with all changeable factors, centralized control is in central processing unit 12.
Summary of the invention
Fundamental purpose of the present utility model provides a kind of optical pointer device of tool illuminance control device, and the light source by control optical pointer device as the luminous power of LED, increases the controlling performance of computer cursor.
Secondary objective of the present utility model provides a kind of optical pointer device of tool illuminance control device, makes optical mouse when adapting to, and except adjusting frame rate and adjusting the shutter mode, can also use the illuminance control device simultaneously, to promote controlling performance.
In order to achieve the above object, the utility model provides the optical pointer device of a sharp tool illuminance control device, includes: a light source, throw a light in a working surface; One optical sensor module receives the refract light that this working surface produces, and captures an image and a parameter; One central processing unit connects this optical sensor module, reads the parameter that this optical sensor module is captured, and through after the computing, produces a feedback control signal; And a current controller connects this central processing unit, receiving this feedback control signal, and changes size of current by this, and then controls the luminous intensity of this light source.
For the ease of understanding feature of the present utility model, purpose and function, the utility model is elaborated below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the configuration diagram of optical mouse;
Fig. 2 be of the present utility model be the Organization Chart of embodiment with the optical mouse;
Fig. 3 is an operational flowchart of the present utility model.
Description of reference numerals: 1 ~ optical mouse commonly used; 10 ~ light-emitting device; 11 ~ optical sensor module; 12 ~ central processing unit; 3 ~ optical mouse; 30 ~ light-emitting device; 31 ~ optical sensor module; 310 ~ buffer; 32 ~ central processing unit; 320 ~ feedback control signal; 33 ~ current controller; 331 ~ converter; 3310 ~ Control current; 332 ~ constant-current circuit; 51-55 ~ the inventive method step.
Embodiment
Principle of the present utility model exactly when reflected light that working surface reflected is not enough, is promptly strengthened the illuminance of optical mouse LED; And cross when strong when reflected light, then reduce the luminous intensity of LED.Please refer to Fig. 2, this is the Organization Chart of example with an optical mouse for the utility model.The utility model comprises a light source 30, missile light to one working surface, and produce a refract light, and being accepted by an optical sensor module 31, with capture an image and one can with this image corresponding parameters; This parameter can be a surface quality numerical value, and (surface quality value SQUAL), is used for representing the effect (visible effect) that can being distinguished of this working surface looked; If this numerical value is positioned between a certain scope, i.e. the state distinguished (preferred visible state) of expression the best.
This optical sensor module 31 also comprises a buffer 310, to store this parameter that this optical sensor module 31 is captured; And a central processing unit 32 can read the parameter that this optical sensor module 31 is captured, and after a specific comparison operation, can produce a feedback control signal 320; And a current controller 33 can receive this feedback control signal 320, and changes the size of an output current by this, to control luminous strong (bright) degree of a light source 30.Again, this current controller 33 also comprises a converter 331 (for example a kind of digital/analog converter), receiving this feedback control signal 320, and according to this feedback control signal 320, exports a Control current 3310; And a constant-current circuit 332 can be stablized Control current 3310 sizes that received, with the luminous intensity of fixed light source 30.
See also Fig. 4, this is an operational flowchart of the present utility model.
Does step 51: this central processing unit 32 at first judge whether to be standby (standby) or idle (idlestate) state? if, execution in step 52, otherwise execution in step 55.When computing machine was just opened, optical mouse 3 will need be done an initial optimized action at present place interface material, to capture best running parameter; Or mouse in use the time interface material change, when moving on to wooden desktop, adapt to and revise just need to do one by mouse pad.Again since general not all time of mouse all using, confirm whether optical mouse 3 is in standby or idle condition, carries out follow-up adaptation work so central processing unit 32 must be felt.
Step 52: central processing unit 32 reads a SQUAL value of the buffer 310 in the optical sensor module 31.
Does step 53: central processing unit 32 judge that by this SQUAL optical mouse 3 is in optimum Working? if then execution in step 55, otherwise execution in step 54.Generally speaking, can be considered as the SQUAL value in the certain limit is to handle optimum Working, avoids unnecessary computing on the one hand, adapts on the other hand and revises also than being easier to reach target zone.
Step 54: adapt to and revise.According to the SQUAL value, adjust luminous strong (bright) degree of the light-emitting device 30 of improvement optical mouse 3, to adapt to the interface environment at present place.Certainly, can also adjust frame rate simultaneously and adjust shutter mode, and suitably adjust adaptation in three's intercropping with an algorithm.
Step 55: optical mouse 3 is according to best state execution work; Through the optical mouse 3 after adapting to, its SQUAL will be fixed on best duty, to obtain best image capture quality.
Optical mouse 3 is to utilize a refract light to detect an image of a working surface, and by the variation that detects this trickle image, just can determine the distance that computer cursor moves; So suitably whether the intensity of this light source (refract light) will directly influence the controlling performance of optical mouse.Directly adjust frame rate and the method for adjusting shutter mode compared to conventional optical mouse, the illuminance control device that the utility model provides more can directly control the luminous intensity of detected light, so effect also seems better.
Need to prove, though the LED of traditional optical mouse 1 has can be dark slightly when stand-by state, the function that can become brighter in the time of in working order, yet this kind in stand-by state with and the conventional art of deepening, mainly be for power saving, or be called sleep pattern (sleeping mode).And the optical mouse 1 of conventional art is under normal duty, and no matter why are the character of working surface or color, and it is fixing that the luminosity of its light source remains, so and the utility model different.
Optical pointer device utilization of the present utility model is quite extensive, can be computer pointer or computer input units such as an optical mouse, an optics trace ball.And the light source of optical pointer device except implementing in light emitting diode (LED) mode, can also utilize laser to work as light source.
The above only is preferred embodiment of the present utility model, can not be used for limiting the utility model scope.Be that all equalizations of being done according to the utility model claim change and modification, will do not lose main idea of the present utility model place, also do not break away from spirit and scope of the present utility model, the former capital should be considered as of the present utility model further.Implement.
Claims (9)
1. the optical pointer device of a tool illuminance control device is characterized in that comprising:
One light source is launched light to one working surface;
One optical sensor module receiving the refract light reflected by this worksheet, and obtains a parameter;
One central processing unit connects this optical sensor module, reads this parameter, and the corresponding feedback control signal that produces; And,
One current controller connects this central processing unit, in order to receive this feedback control signal, to control the size of an output current, to control the luminous intensity of this light source.
2. optical pointer device as claimed in claim 1, wherein this optical sensor module comprises a buffer, this buffer storage parameter.
3. optical pointer device as claimed in claim 1, wherein parameter be a surface quality numerical value (surface quality value, SQUAL).
4. optical pointer device as claimed in claim 1, this light source are one of a light emitting diode and a laser.
5. optical pointer device as claimed in claim 1, wherein this central processing unit can simultaneously or be controlled following parameters arbitrarily at least: frame rate (frame rate) and shutter mode (shutter mode).
6. optical pointer device as claimed in claim 1, wherein this current controller comprises a converter, receiving this feedback control signal, and exports a Control current.
7. optical pointer device as claimed in claim 7, wherein this Control current inputs to constant-current circuit, with the stable Control current that is received.
8. optical pointer device as claimed in claim 7, wherein this converter is a digital/analog converter.
9. optical pointer device as claimed in claim 1, this indicator device are optical mouse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032044992U CN2612994Y (en) | 2003-02-24 | 2003-02-24 | Optical pointer with illuminance control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032044992U CN2612994Y (en) | 2003-02-24 | 2003-02-24 | Optical pointer with illuminance control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2612994Y true CN2612994Y (en) | 2004-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032044992U Expired - Fee Related CN2612994Y (en) | 2003-02-24 | 2003-02-24 | Optical pointer with illuminance control device |
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| Country | Link |
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| CN (1) | CN2612994Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101795511B (en) * | 2009-02-02 | 2013-01-16 | 广达电脑股份有限公司 | Light source compensating method |
| CN103309517A (en) * | 2012-03-15 | 2013-09-18 | 原相科技股份有限公司 | Optical input device and input detection method thereof |
| CN108021244A (en) * | 2016-11-03 | 2018-05-11 | 原相科技股份有限公司 | A kind of optics movement quality determination methods and optics movement quality judging system |
-
2003
- 2003-02-24 CN CNU032044992U patent/CN2612994Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101795511B (en) * | 2009-02-02 | 2013-01-16 | 广达电脑股份有限公司 | Light source compensating method |
| CN103309517A (en) * | 2012-03-15 | 2013-09-18 | 原相科技股份有限公司 | Optical input device and input detection method thereof |
| CN108021244A (en) * | 2016-11-03 | 2018-05-11 | 原相科技股份有限公司 | A kind of optics movement quality determination methods and optics movement quality judging system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |